Moonlit trails, pre-dawn training, lunchtime escapes—priorities matter, and devoted trail runners don’t waste opportunities. Our Long-Sleeved Fore Runner shirt wicks, breathes and gives added coverage for early starts and late finishes. This everyday training and running shirt is made with a lightweight 100% recycled polyester fabric that’s extremely air permeable, and its flatlock seams (offset at the shoulder) allow all-day, no-chafe comfort when worn next to skin. The updated, streamlined sleeve design includes a new underarm gusset for even easier range of motion. Other details include 15-UPF sun protection, Polygiene® permanent odor control, reflective logos on the chest and center back neck and a convenient locker loop for drying out.

Odor Resistant

Polygiene® odor control permanently protects your garments from smelling like a middle school locker room. Sweat itself is odorless, but it creates the conditions that bacteria need to multiply, and some of those bacteria produce odors. Polygiene permanent odor control stops the growth of odor-causing bacteria on fabrics, so you can wear more and wash less.

Active only on the fabric surface, Polygiene permanent odor control does not interfere with perspiration or with the skin’s natural bacterial flora. Polygiene particles are more than 100 times larger than nanoparticles and therefore are too large to penetrate to the skin’s barrier. Polygiene-treated fabrics have received Medical Class 1 approval in Europe, the same class that includes bandages.

Sun Protection

Lacking fur, feathers or scales, we humans have to think up clever ways to protect ourselves from the sun. Products with the UPF designation provide built-in sun protection that won’t wear off.

UPF stands for “Ultraviolet Protection Factor.” This value represents the fractional amount of the sun’s harmful UV rays that pass through a fabric. A rating of “25” indicates that only 1/25th , or 4% of the UV rays pass through the garment.

Patagonia products with rated UPF protection are tested independently to meet Australia/New Zealand or AATCC protocols. A rating of 15-24 earns a product a rating of “good”; a rating of 25-39 is "very good"; and a rating of 40-50+ is “excellent.” *